package com.atguigu.gulimall.product.service.impl;

import com.atguigu.gulimall.product.entity.SkuImagesEntity;
import com.atguigu.gulimall.product.entity.SpuInfoDescEntity;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.SkuItemSaleAttrVo;
import com.atguigu.gulimall.product.vo.SkuItemVo;
import com.atguigu.gulimall.product.vo.SpuItemAttrGroupVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ThreadPoolExecutor;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SkuInfoDao;
import com.atguigu.gulimall.product.entity.SkuInfoEntity;
import org.springframework.util.StringUtils;


@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {

    @Autowired
    private SkuImagesService skuImagesService;

    @Autowired
    private SpuInfoDescService spuInfoDescService;

    @Autowired
    private AttrGroupService attrGroupService;

    @Autowired
    private SkuSaleAttrValueService skuSaleAttrValueService;

    /**
     * 使用的是自定义线程池
     */
    @Autowired
    private ThreadPoolExecutor executor;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }

    /**
     * 6.1).Sku的基本信息:pms_sku_info
     * @param skuInfoEntity
     */
    @Override
    public void saveSkuInfo(SkuInfoEntity skuInfoEntity) {
        this.baseMapper.insert(skuInfoEntity);
    }

    /**
     * Sku检索
     * @param params
     * @return
     */
    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SkuInfoEntity> queryWrapper = new QueryWrapper<SkuInfoEntity>();
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            queryWrapper.and((wrapper)->{
                wrapper.eq("sku_id", key)
                        .or()
                        .like("sku_name",key);
            });
        }
        String catelogId = (String) params.get("catelogId");
        if(!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)){

            queryWrapper.eq("catalog_id", catelogId);
        }
        String brandId = (String) params.get("brandId");
        if(!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)){
            queryWrapper.eq("brand_id", brandId);
        }
        String min = (String) params.get("min");
        if(!StringUtils.isEmpty(min)){
            //gt:大于   ge:大于等于
            queryWrapper.ge("price", min);
        }
        String max = (String) params.get("max");
        if(!StringUtils.isEmpty(key) && "0".equalsIgnoreCase(max)){
            try{
                BigDecimal bigDecimal = new BigDecimal(max);
                //le:小于等于
                if(bigDecimal.compareTo(new BigDecimal("0"))==1){
                       queryWrapper.le("price", max);
                }

            }catch (Exception e){

            }

        }

        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params), queryWrapper
        );

        return new PageUtils(page);
    }

    /**
     * 查出当前SpuId对应的所有Sku信息
     * @param spuId
     * @return
     */
    @Override
    public List<SkuInfoEntity> getSkusBySpuId(Long spuId) {
        QueryWrapper<SkuInfoEntity> wrapper = new QueryWrapper<>();
        wrapper.eq("spu_id", spuId);
        List<SkuInfoEntity> list = this.list(wrapper);
        return list;
    }

    /**
     * 查询详情页Sku信息
     * 异步编排优化
     * @param skuId
     * @return
     */
   /* @Override
    public SkuItemVo item(Long skuId) {
        SkuItemVo skuItemVo=new SkuItemVo();
        
        //1.Sku基本信息     pms_sku_info
        SkuInfoEntity info = getById(skuId);
        skuItemVo.setInfo(info);
        Long catalogId = info.getCatalogId();
        Long spuId = info.getSpuId();


        //2.Sku的图片信息   pms_spu_images
        List<SkuImagesEntity> images=skuImagesService.getImagesBySkuId(skuId);
        skuItemVo.setImages(images);

        //3.获取Spu销售属性组合
        List<SkuItemSaleAttrVo> saleAttrVos = skuSaleAttrValueService.getSaleAttrsBySpuId(spuId);
        skuItemVo.setSaleAttr(saleAttrVos);

        //4.获取Spu的介绍    pms_spu_info_desc
        SpuInfoDescEntity spuInfoDescEntity = spuInfoDescService.getById(spuId);
        skuItemVo.setDesp(spuInfoDescEntity);

        //5.获取spu的规格参数信息
        List<SpuItemAttrGroupVo> attrGroupVos = attrGroupService.getAttrgroupWithAttrsBySpuId(spuId,catalogId);
        skuItemVo.setGroupAttrs(attrGroupVos);
        return skuItemVo;
    }*/
    @Override
    public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {
        SkuItemVo skuItemVo=new SkuItemVo();
        CompletableFuture<SkuInfoEntity> infoFuture = CompletableFuture.supplyAsync(() -> {
            //1.Sku基本信息     pms_sku_info
            SkuInfoEntity info = getById(skuId);
            skuItemVo.setInfo(info);
            return info;
        }, executor);

        CompletableFuture<Void> saleAttrFuture = infoFuture.thenAcceptAsync((res)->{
            //3.获取Spu销售属性组合
            List<SkuItemSaleAttrVo> saleAttrVos = skuSaleAttrValueService.getSaleAttrsBySpuId(res.getSpuId());
            skuItemVo.setSaleAttr(saleAttrVos);
        }, executor);

        CompletableFuture<Void> descFuture = infoFuture.thenAcceptAsync((res)->{
            //4.获取Spu的介绍    pms_spu_info_desc
            SpuInfoDescEntity spuInfoDescEntity = spuInfoDescService.getById(res.getSpuId());
            skuItemVo.setDesp(spuInfoDescEntity);
        },executor);

        CompletableFuture<Void> baseAttrFuture = infoFuture.thenAcceptAsync((res)->{
            //5.获取spu的规格参数信息
            List<SpuItemAttrGroupVo> attrGroupVos = attrGroupService.getAttrgroupWithAttrsBySpuId(res.getSpuId(),res.getCatalogId());
            skuItemVo.setGroupAttrs(attrGroupVos);
        },executor);

        CompletableFuture<Void> imageFuture = CompletableFuture.runAsync(() -> {
            //2.Sku的图片信息   pms_spu_images
            List<SkuImagesEntity> images = skuImagesService.getImagesBySkuId(skuId);
            skuItemVo.setImages(images);
        }, executor);

        //等待所有任务都完成 异步编排
        CompletableFuture.allOf(infoFuture,saleAttrFuture,descFuture,baseAttrFuture,imageFuture)
                        .get();

        return skuItemVo;
    }

}